scholarly journals Inverted critical adsorption of polyelectrolytes in confinement

Soft Matter ◽  
2015 ◽  
Vol 11 (22) ◽  
pp. 4430-4443 ◽  
Author(s):  
Sidney J. de Carvalho ◽  
Ralf Metzler ◽  
Andrey G. Cherstvy
Keyword(s):  
Charged Surfaces ◽  
Charged Polymers ◽  
Oppositely Charged

What are the fundamental laws for the adsorption of charged polymers onto oppositely charged surfaces, for convex, planar, and concave geometries?

Direct Measurement of Sub-Debye-Length Attraction between Oppositely Charged Surfaces

2009 ◽  
Vol 103 (11) ◽  
Author(s):  
Nir Kampf ◽  
Dan Ben-Yaakov ◽  
David Andelman ◽  
S. A. Safran ◽  
Jacob Klein
Keyword(s):  
Direct Measurement ◽  
Debye Length ◽  
Charged Surfaces ◽  
Oppositely Charged

scholarly journals In Vivo Toxicity Assessment of Chitosan-Coated Lignin Nanoparticles in Embryonic Zebrafish (Danio rerio)

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 111
Author(s):  
Jared S. Stine ◽  
Bryan J. Harper ◽  
Cathryn G. Conner ◽  
Orlin D. Velev ◽  
Stacey L. Harper
Keyword(s):  
Antimicrobial Properties ◽  
Toxicity Assessment ◽  
Environmental Footprint ◽  
Control Groups ◽  
Charged Surfaces ◽  
Chorionic Membrane ◽  
High Concentrations ◽  
And Control ◽  
Oppositely Charged

Lignin is the second most abundant biopolymer on Earth after cellulose. Since lignin breaks down in the environment naturally, lignin nanoparticles may serve as biodegradable carriers of biocidal actives with minimal environmental footprint compared to conventional antimicrobial formulations. Here, a lignin nanoparticle (LNP) coated with chitosan was engineered. Previous studies show both lignin and chitosan to exhibit antimicrobial properties. Another study showed that adding a chitosan coating can improve the adsorption of LNPs to biological samples by electrostatic adherence to oppositely charged surfaces. Our objective was to determine if these engineered particles would elicit toxicological responses, utilizing embryonic zebrafish toxicity assays. Zebrafish were exposed to nanoparticles with an intact chorionic membrane and with the chorion enzymatically removed to allow for direct contact of particles with the developing embryo. Both mortality and sublethal endpoints were analyzed. Mortality rates were significantly greater for chitosan-coated LNPs (Ch-LNPs) compared to plain LNPs and control groups. Significant sublethal endpoints were observed in groups exposed to Ch-LNPs with chorionic membranes intact. Our study indicated that engineered Ch-LNP formulations at high concentrations were more toxic than plain LNPs. Further study is warranted to fully understand the mechanisms of Ch-LNP toxicity.

scholarly journals Ions in an AC Electric Field: Strong Long-Range Repulsion between Oppositely Charged Surfaces

2020 ◽  
Vol 125 (5) ◽  
Author(s):  
Łukasz Richter ◽  
Paweł J. Żuk ◽  
Piotr Szymczak ◽  
Jan Paczesny ◽  
Krzysztof M. Bąk ◽  
...  
Keyword(s):  
Electric Field ◽  
Long Range ◽  
Charged Surfaces ◽  
Ac Electric Field ◽  
Oppositely Charged

Adsorption of Polyelectrolytes at Oppositely Charged Surfaces

2001 ◽  
Vol 34 (10) ◽  
pp. 3421-3436 ◽  
Author(s):  
Andrey V. Dobrynin ◽  
Alexander Deshkovski ◽  
Michael Rubinstein
Keyword(s):  
Charged Surfaces ◽  
Oppositely Charged
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